b<template>
  <view class="">
    <view class="cart-container" v-if="cart.length !== 0">
      <!-- //收货地址组件 -->
      <my-address></my-address>
      <!-- 商品列表的标题区域 -->
      <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 右侧的文本 -->
        <text class="cart-title-text"> 购物车 </text>


      </view>
      <!-- 循环渲染购物车中的商品信息 -->
      <uni-swipe-action>
        <block v-for="(goods,i) in cart" :key="i">
          <uni-swipe-action-item :options="options" @click="swipeItemClickHander(goods)">
            <my-goods @num-change="numberChangeHandler" :showNum="true" :goods="goods"
              @radio-change="radioChangeHandler" :showRadio="true"></my-goods>
          </uni-swipe-action-item>
        </block>
      </uni-swipe-action>

      <!-- 使用自定义结算组件 -->
      <my-settle></my-settle>
    </view>

    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_border@2x.png" class="empty-img" mode=""></image>
      <text class="tip-text">空空空如也 </text>


    </view>
  </view>

</template>

<script>
import badgeMix from '@/mixins/tabbar-badge.js'
import { mapState, mapMutations } from 'vuex'
export default {
  mixins: [badgeMix],
  computed: {
    ...mapState('m_cart', ['cart'])
  },
  data () {
    return {
      //按钮的配置对象
      options: [{
        text: '删除',
        style: {
          backgroundColor: '#c00000'
        }
      }]
    };
  },
  methods: {
    ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodscount', 'removeGoodsById']),
    // 商品的勾选状态发生了变化
    radioChangeHandler (e) {
      // console.log(e);

      this.updateGoodsState(e)
    },
    // 商品的数量发生了变化
    numberChangeHandler (e) {
      // console.log(e);
      this.updateGoodscount(e)
    },
    // 点击了滑动操作按钮
    swipeItemClickHander (goods) {
      // console.log(goods);
      this.removeGoodsById(goods.goods_id)
    },

  }

}
</script>

<style lang="scss">
.cart-container {
  padding-bottom: 50px;
}

.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;

  .cart-title-text {
    font-size: 14px;
    margin-left: 10px;
  }
}

.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;

  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
